Chair arm



FIG. 1 is a top outside rear perspective view of a chair arm front face according to my new design;

FIG. 2 is a top inside rear perspective view thereof;

FIG. 3 is an outside elevational view thereof;

FIG. 4 is an inside elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for chair arm, as shown and described. 